{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{1}{ccc}}
\hline\hline
                    &\multicolumn{3}{c}{(1)}               \\
                    &\multicolumn{3}{c}{}                  \\
                    &        Mean&   Std. Dev.&           N\\
\hline
Republican          &        0.30&        0.46&        2383\\
Democrat            &        0.42&        0.49&        2383\\
Independent         &        0.28&        0.45&        2383\\
\hline
Observations        &        2383&            &            \\
\hline\hline
\end{tabular}
}
